Lock



May 29, 1934. p H RD 1,961,106

LOCK

Filed OCt. 21, 1951 INVENTOR lfdfivia I? lfinvaf /7// ATTORNEY Patented May 29, 1934 UNITED STATES PATENT OFFICE LOCK, Edwin P. Hurd, Detroit, Mich.

Application October 21,

3 Claims.

My invention relates to a new and useful improvement in a lock and has for its object the provision of a construction in which a threaded stud or similar threaded projection may be threaded into a retaining portion to lock or se-' cure the part to be locked or secured so that it cannot be moved relatively to the retaining or securing portion and to provide in association with the threaded stud a lock mechanism whereby the threaded stud may be readily rotated when the lock mechanism is moved to operative position and in which, when the lock mechanism is moved to inoperative position, the rotation of the stud cannot be effected and the lock mechanism will rotate freely relatively to the stud.

Another object of the invention is the provision of a lock of this class which will be simple in structure, economical of manufacture, efficient and durable of use and easily and quickly assembled.

Another object is the provision of a lock of this class which cannot be rendered inoperative by tampering with the same.

Other objects will appear hereinafter.

The invention consists in the combination and arrangement of parts hereinafter described and claimed.

The invention will be best understood by a reference to the accompanying drawing which forms a part of this specification and in which,

Fig. 1 is a transverse sectional view of the invention showing it used as a tire lock,

Fig. 2 is a fragmentary sectional view taken on line 22 of Fig. 1,

Fig. 3 is an enlarged longitudinal central sectional view of the invention with parts broken away,

Fig. 4 is a sectional View taken on line 4-4 of Fig. 3,

Fig. 5 is a sectional view taken on line 5-5 of Fig. 3, and

Fig. 6 is a sectional View taken on line 6-6 of Fig. 3.

From a description of the invention, it will appear obvious that the lock may be used for various purposes, although in the drawing I have illustrated the invention used to secure a vehicle wheel.9 with a tire 10 mounted thereon in the fender well 11. A securing bar 12 is projected at one end through an opening 13 formed in the well and the other end of the bar 12 is provided with an opening 14. On the fender flange 15, I have provided a boss 16 having a threaded socket 17.

In the invention I provide a threaded stud 18 1931, Serial No. 570,060

carrying the cup-shaped head 19 at one side of which is formed an opening 20. Rotatably mounted in the cup-shaped head 19 is a cupshaped retainer 21 having a diametrically directed channel 22 at its base and opening through the opening 23 so as to register with the opening 20. Slidably mounted in the channel 22 is a lock head 24 connected by the stem 25 to an actuat-' ing or push head 26. This push head 26 is provided with a socket 27 in which engages one end of a spring 28, the other end of which engages the end wall of the channel 22 so as to normally maintain the lock head 24 thrust outwardly so as to engagein the opening 20. The upper end of the retainer 21 is provided with flat surfaces 29 which may be engaged by a wrench so that the retainer 21 may be rotated. When the lock head 21 is in engagement in the opening 20 a rotation of the retainer 21 will eifect a rotation of the cup-shaped head 19 and the threaded stud 18.

Embracing the cup-shaped head 19 so as to freely rotate about the same is a cover shell 30 having an inwardly projecting flange 31 adjacent one end which serves to engage the end of the head 19 and limit axial movement of the shell 30 relatively thereto in one direction. A peripheral flange or bead 32 is formed on the cupshaped retainer 21 and is engaged by a ring 33 which is pressed into the upper end of the shell 30 so as to secure the shell 30 on the cup-shaped head 19 and prevent removal of the retainer 21 from within the cup-shaped head 19.

Axially extending grooves 34 and 35 are formed on the inner surfaces of the cup-shaped retainer 21 adjacent the upper end thereof adapted for the reception of the lock fingers 36 which may be projected outwardly from the key plug 3'7 which is rotatably mounted in the upper end of the retainer 21. A groove 38 is formed on the inner surface of the retainer 21 for the reception of the locking plate 39 which is normally pressed outwardly beyond the periphery of the key plug 37 and which may be pressed inwardly against the tension of a spring for the purposes of inserting the key plug into the retainer 21. When the key plug has been inserted into the retainer 21 a sufficient distance to bring the member 39 into registration with the groove 38, the member 39 will snap into the groove 38, thus locking the key plug in the retainer 21. When the lock fingers 36 are engaged in the grooves 34 and 35, the key plug 37 cannot be rotated relatively to the retainer 21. Therefore, in order to operate a device, the use of a key 40 becomes necessary.

Projecting outwardly from the inner end of 1 10 the key plug 37', c'cent'rically thereof, is an engagement boss or finger 41.

In operation, in order to retract the lock head 24 from engagement in the opening 20, the key plug 37 will be rotated by use of the key 40 and the boss 41 will engage the head 26 so as to slide the lock head rearwardly into inoperative position against the tension of the spring 28 and the lock fingers 36 engaging in the grooves 34 and 35 will serve to lock the parts in this position. When in this position retainer 21 will not efiect a rotation of the stud 18 so that it cannot be removed from the threaded socket 17 into which it has been threaded and thus the bar 12 is secured in its operative or locking position. When it is desired to release the lock head 24 for movement to operative position, it is but necessary to retract the locking fingers 36 by means of the key 40 and rotate the key plug 3'7 to release the lock head 24 for movement into the opening 20. A spring 42 is positioned in the cup-shaped head 19 in engagement with the inner end with the retainer 21 to prevent a rattling of theparts. The shell 30 is provided at its lower end with a slot'or cut away portion 43 which embraces the securing bar 12 :so that the shell 30 cannot be rotated. It will thus be seen that the member 25 with the head 24 operates as a latch mechanism for efiecting a rotation of the retainer 21 in unison with the head 19, and that the key plug with'its lock mechanism affords a key operated actuating means for actuating the latch mechanism.

It is believed obvious that a device constructed in this manner "is quite simple of operation and may be easily and quickly assembled and disassembled.

While I have illustrated and described the preferred form of construction, I do not wish to limit myself to the precise details of structure shown, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention what I claim is new and desire to secure by Letters Patent is:

1. A lock of the class described comprising a stud threadable into a supporting member; a hollow head carried on the outer end of said stud; a lock retaining member rotatably mounted in said head; means in said member operable at will for efiecting a rotation of said member in unison with said head; a tubular shell embracing said head, one end of said retaining member projected outwardly from one end of said shell; and means for preventing rotation of said shell in unison with said head upon the threading of said stud into a supporting member.

2. A look of the class described comprising: a stud threadable into a supporting member; a hollow head carried on the outer end of said stud; a lock retaining member rotatably mounted in said head;.means in said member operable at will for effecting a rotation of said member in unison with said head; a tubular shell embracing said head, one end of said retaining member projecting outwardly from one end of said shell; means for preventing rotation of said shell in unison with said head upon the threading of said stud into a supporting member; and means engageable with said retaining member for preventing relative axial movement of the same relatively to said shell.

.3. In :combination, a stud threadable into a supporting body; :a hollow head carried by the outer end of said stud; a retaining member rotatably mounted in said head; a latch mechanism adapted, when in operative position, for preventing relative rotation of said head and said retaining member; a key plug rotatably mounted in said retainer and adapted upon rotation to a predetermined position for moving said latch mechanism to inoperative position; a lock mechanism in said key plug cooperating with said retainer for locking said key plug against rotation relatively to said retainer upon rotation of the same to said pre-determined position; means on said key ,plug cooperating with said retainer for preventing axial movement of said key plug relatively to said retainer; and means cooperating with-said head and engageable with said I retainer for preventing axial movement of said retainer relatively to said head.

EDWIN P. HURD.

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